<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<input type="button" value="버튼1" id="btn1" name="btn1"/>
<input type="button" value="버튼2" id="btn2" name="btn2"/>
<input type="button" value="버튼3" id="btn3" name="btn3"/>

</body>
</html>